Diving apparatus



' No. 614,626. Patented Nov; 22, I898. E. F. w. scuoemmusn.

DIVING APPARATUS.

3 Sheets-Sheet l.

No. 6l4,626.

Patented Nov- 22, I898. E. F. W. SCHOENNAUER. v

DIVING APPARATUS.

(Application filed Oct. 16, 1897.; (No Model.) 3 Sheets-Sheet 2.

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)ii/ wa 5 /M,ZZZ 9J6 0., WASH! Patented Nov. 22. I898. F..W. SCHOENNAUEB.

DIVING APPARATUS.

(No Model.) m

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, I ZZW- g ff f caaez" UNITED STATES PATENT CE ICE.

EMIL F. \V. SCIIOENNAUER, OF CHICAGO, ILLINOIS;

DIVING APPARATUS.

'srEcir'roA'rIoN forming part of Letters Patent No. 614,626, dated November 22, 1898.

. Application filed October 16, 1897- Serial No. 655,460. (No model.)

To to whom, zit ntay concern.-

Be it known that I, EMIL F. W. SoHoEN- NAUER, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Diving Apparatus; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in diving apparatus, and refers more specifically to a closed shell or housing, commonly called a divingbell, which may be sunk to the bottom of a body of water and which is provided with tool-actuating devices which are operable from the inside of the shell, by which a person inside of the shell may operate upon vessels or other bodies exterior to the shell.

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a diving apparatus embodying my invention. Fig. 2 is a plan section taken on the indirect line 2 2 of Fig. 1. Fig. 3 is a side elevation of one of the disks in which the tool-actuating levers are mounted. Fig. 4 is an edge elevation thereof. Fig. 5 is a detail of one of the tool-actuatin g levers. Fig. 6 is a vertical section of an apparatus, taken on line 6 6 of Fig. 1. Fig. 7 is a longitudinal sectional view of the bolt-inserting devices, taken on line 7 7 of Fig. 6. Figs. 8 and 9 are detail sections taken on lines 8 8 and 9 9, respectively, of Fig. 7. Fig. 10 is a detail sectional view of the outer end of the bolt-insertin g devices, showing the clampingjaws mounted therein. Fig. 11 is an end elevation of the parts shown in Fig. 10. Figs. 12 and 13 are cross-sectional views taken on lines 12 12 and 13 13 of Fig. 10. Fig. 14 is a. perspective view of the chuck. Fig. 15 is a perspective view of one of said jaws removed.

A diving apparatus embracing my invention consists generally of a housing A, which, as shown, is cylindric in form and made up of an outer shell A and an inner shell A, concentric with said outer shell. Said inner and outer shells are composed of a plurality of sheets of metal riveted together at their edges. The inner shell is of considerable less diameter than the outer shell and is separated therefrom by means of distance-bars consisting of I-beams A placed vertically between said inner and outer shells and secured thereto by rivets a, passing through the flanges thereof and through said shells. WVithin the inner shell are located heavy horizontal strengthening rings or ribs A which are attached to the said inner shell. Said rings or ribs serve to support the said I-loeams from being thrust or crushed inwardly by outside pressure on the walls of the chamber. Any desired number of such rings may be used, two only being shown in the drawings. This construction affords great strength in the housing A and capacity to resist the pressure of the water through which it is sunk, while at the same time giving lightness to the structure as a whole. The housing is provided with upper and lower walls A which in this instance are of convex form on their outer surfaces. Said walls consist of two thicknesses of sheet metal A A which are separated from each other and secured rigidly to gether by means of curved I-beams A which are arranged radially and attached at their ends to the I-beams A The outer thickness of the upper wall is provided on its outer margin with an annular flat flange A which is perpendicular to the vertical walls of the housing, and the upper end of the outer shell A of the housing is provided with a radiallyextending annular flange A", which in this instance consists of a separate curved anglebar secured to said upper edge of the shell by means of rivets a Said annular flange A is equal in diameter to the diameter of the outer thickness of the upper wall, rests in contact with the horizontal annular surface A and is secured thereto by means of bolts or rivets a The inner'thickness of said upper wall is provided with an annular vertically-extending flange A which extends downwardly within and is secured to the upper edge of the inner shell A of the housing by means of rivets 0. The lower wall A of the housing is made like the upper wall just described, with the exception that the outer thickness A is secured to the lower edge of the outer shell A by being provided with an upwardly-extending flange A, which fits within and is secured to the lower edge of said inner shell by means of rivets a. Vith the exception just noted the parts of the lower wall are lettered like those of the upper wall described.

The apparatus will be provided with supply and return air-pipes B B, which are shown as inserted through the upper wall thereof to maintain a supply of air within the chamber. Suitable ballast will be provided in the bottom of the chamber, which is herein shown as consisting of block (1 of iron or the like, placed beneath a flooring O in the bottom of the housing. Said housing is provided with a plurality of windows or outlooks D, which consist of metal frames D, bolted to the inner and outershells of the wall. As herein shown, D designates a rectangular plate or frame which is mounted in and closely fits within openings in the inner and outer shells A and A the opening in the inner shell being smaller than that in the outer shell. Said frame is provided with a marginal flange d,

through which bolts or rivets cl pass, by

means of which said plate is rigidly secured to said outer shell A. Said plate D is provided with a flaring opening which is wider at its outer than its inner end and which is herein shown as of rectangular form. The frame D extends at its inner side into contact with the outer face of the inner shell A around the openingin the latter, and a clamping frame or ring D is applied to the inner face of said inner shell opposite said plate, said ring D being provided with an opening similar in shape to and of the same size as the opening of said outer plate D. The said frames D and D are held together by bolts (1 which pass through the inner shell and serve to rigidly join said parts. In a groove formed between said inner and outer frames D and D and covering the opening therein is mounted a heavy plate-glass D which gives access of light to the interior of the chamber. Said glass being located at the inner part of the opening and at a distance from the outer face of the inclosure is protected from injury by objects which may comein contact with the inclosure. The housing may be provided with an ynu mber of such windows as is found desirable. To close the windows in case of breakage of the glass, safety-covers D are provided, the same being pivoted to the frames at the top or bottom of the windows and provided with securing devices for holding them securely closed.

As a means of gaining access to the interior of the chamber the same is provided in one of its walls with a manhole E, which is constructed as follows The inner and outer shells of the housing are provided with oppositelyarranged openings E E the latter of which is of greater diameter than the former.

E designates a cast-metal frame which is mounted in the opening E of the outer shell A, with its inner face in contact with the inner shell A and is provided on its outer face with a flat flange E*, which rests against the outer face of the shell A, outside of the opening therein, and is secured to said outer shell by means of bolts 6, which pass through the same through said shell. Said frame E is provided also on its inner side with a rabbet E of a depth approximately equal to the thickness of the inner shell and within which fits the margin of the shell around the opening'E therein. Said frame F. is secured to the inner shell by means of tap-bolts e, which pass through a clamping-ring E on the inner face of said inner shell and through said inner shell into the frame. Said clamping-ring E is provided with an opening approximately equal in size to the central opening of the frame E both openings being preferably of oblong form. The opening in said frame is of outwardly-flarin g form, being greater in size at the outer than at the inner face thereof. Said frame E serves to rigidly secure the inner and outer shells together around the openings therein.

E designates a manhole cover which fits against the flange E of the frame E" and is provided with an inwardly-extending flange E, which fits within the conically-shaped interior surface of the frame and is preferably as deep as the thickness of said frame. In order to provide a watertight joint between said cover and the frame E, a packing or gasket E", of any suitable material, such as rubber, is interposed between the said parts. Said cover E is adapted to be tightly clamped against the packing-ring, and this is accomplished in the present instance by means of two eoacting bolts E and E. The bolt E is inserted through a central opening in the plate and has screw-threaded engagement at its inner end with the bolt E, which latter passes through a central opening in a spider E arranged to bear against the inner face of the clamping-ring E. As herein shown, the bolt E is provided with a screw-threaded axial aperture, and the end of the bolt E is made of such size as to fit Within said aperture, so that when either bolt is tightened the cover may be rigidly clamped upon the frame E andawater-tight joint secured. With this construction it will be seen that the manholecover E may be removed and clamped in place either from the inner or outer side thereof, as it may become necessary.

Suitable tool-actuating devices are mounted in the walls of the chamber, to the outer ends of which are adapted to be attached different tools, which are actuated from the inside of the housing. As herein shown, said housing is provided at adjacent points in the lower part of its side wall with two oscillatory tooloperating levers F, which are provided on their inner ends with operating-handles f, by means of which they may be actuated. Said levers are pivoted between their ends in the wall of said housing by means permitting them to be oscillated in any plane desired. The said levers are alike in their construction, and in the following description but one will clearlyin Figs. 2 and 4.

be referred to. The construction by which the oscillatory movement of the levers in different planes is accomplished is as follows: The inner and outer shells A A of the walls of the housing are provided with concentric openings f f the latter of which is of greater diameter than the former, and within said openings is mounted a two-part open frame or ring, which consists of an outer portion F, equal in diameter to the diameter of said opening f and mounted therein, with its inner side engaging the inner shell A of the wall. Said outer portion F of the ring is provided on its outer side with a flange f which rests against the outer face of the shell A and is secured thereto by means of bolts f passing therethrough and through said shell. Said outer portion of the ring is provided with a central circular opening, which is of conical or flaring shape at its outer part, as seen in Fig. 2 of the drawings. The inner portion F of the ring is of less thickness than the outer portion thereof and is provided with an inwardly-flaring or conical-shaped central aperture, which registers with the aperture f of the outer part of the ring. Said inner portion of the ring is secured in place and in rigid relation with the outer portion thereof by means of tap-bolts f which pass through the inner shell A and into the outer portion F of the ring. Said outer portion F of the ring is provided with an annular recess or rabbet F which lies in a plane perpendicular to the central axis of the ring and concentric therewith and forms with the inner portion F of the frame an annular groove. Within said groove is mounted a disk F, in which the oscillatory lever F is pivoted. Said disk is mounted within the recess, so as to have a free rotary movement therein about its axis of rotation. In order that the lever may be pivotally mounted in the disk in a manner to permit its removal therefrom, said disk is herein shown as made of two parts, being divided in the planeof the pivot of the lever and provided in its adjacent parallel faces with bearing-apertures f within which the ends of the pivot-shaft f enter. Said disk is thickened in its central part, as shown at f to provide additional strength where it is engaged by the pivot-pin of the lever F. The adjacent faces of the disk are cut away to provide a parti-cylindric recess F adapted to receive a cylindric block F forming a part of the said lever F, said block being arranged to fit closely within the recess and to form therewith a water-tight joint to prevent ingress of water to the interior of the chamber. In order to further prevent the passage of the water between the said cylindric block and the adjacent parts of the disk, said disk is provided at the opposite edges of said block with packing grooves, within which are mounted suitable packings f, as shown more With this construction it will be seen that the plane of oscillation of the lever may be changed as the requirements of the work dictate, it being obvious that by rotating the bearing-disk F in its bearing-groove the plane of oscillation of said lever may be changed as desired. Said lever may be removed from its bearings by first removing the inner portion F of the frame, after which the lever and disk may be pulled inwardly until said disk is released from the rabbet F when the parts of the disk may be separated and removed from the lever. The insertion of said disk in place will of course be merely a reversal of this operation. The flaring or conical shape of the opening of the frame or bearing-ring on the inner and outer side thereof provides ample room for the oscillation of the lever to any desired angle, as clearly seen in Fig. 2. Said lever F will in practice preferably be made in three parts na-mely, a central or bearing part f upon which the cylindric block is formed, an outer arm or part f, to which the tool is fastened, and the inner portion or hand-lever f. Said part f will be made so as to be readily detached from the middle or bearing portion of the lever, so that it may be easily removed and an arm of a different shape or character substituted, it being understood that different tools and different operations may require external arms of different shapes, lengths, or sizes. For some purposes it may be necessary to clamp or hold the disk F from turning in the housing, and this may be accomplished by means of a set-screw F inserted through the inner portion of the frame and bearing against the said disk.

The levers F being capable of rotation in the housing may be used for drilling or like operations, it being obviously practicable to attach a boring-tool or the like to the outer end of the lever and giving suitable rotary motion thereto.

As herein shown, the housing is provided at its upper part with a third oscillatory lever G. Said lever is mounted in the wall of the housing and is in all respects similar to the levers just described. It is, however, shown as provided on its outer or operative end with a bent portion which stands at right angles to the main body of the lever and upon the outer endof which is mounted a suitable clamping device G.

The levers F and G may obviously be used either separately or together in performing different operations -as, for instance, two of them may be used to operate a crosscut-saw by attaching the ends of such saw to adjacent levers, or two levers may be used to operate axes for chopping, the two levers in such case operating. at an angle to each other, so as to make converging cuts, such as are made by aXmen in felling trees.

As a further and separate improvement the diving apparatus illustrated is provided with means for inserting lag or other screws or for driving nails. Said device, like the oscillatory tool-actuating levers, is mounted with its operative end projecting through the wall of the housing and with its inner end located within the chamber of the diving apparatus. Said device is constructed as follows:

H designates a chamber or cylinder, which is mounted in suitable openings in the inner and outer shells of the wall of the apparatus, so as to project at its opposite ends beyond both sides of said wall. Said cylinder is herein shown as secured to the opposite shells of the housing by means of angle L-shaped rings 7b, which are secured to the shells and to the chamber by rivets or bolts h. Said cylinder II is closed at its ends by end walls II, and said walls are provided with circular apertures or openings concentric with the central axis of the cylinder. Vithin said cylinder is mounted a reciprocating and rotary hollow shaft I1 which is of such external diameter as to fit closely within the opposite openings of the end walls 11 of the cylinder. Said shaft is provided within the cylinder with guide-flanges II, which are of such external diameter as to closely fit within the inner surface of the cylinder, there being preferably two of such flanges, one adjacent to each end of said cylinder. Said cylinder is made of two parts in order to fit over the shaft and is preferably united in longitudinal lines of cont-act. Between said guideflanges and around the sleeve H is placed a packing II, which insures a water-tight joint between said shaft and cylinder. The hollow shaft is adapted to move endwise within the said cylinder, as well as turn freely there in, the guide-flanges being arranged at a distance apart considerably less than the length of said cylinder. Said shaft 11 is open at its inner end and closed at its outer end by an end wall 11 and is provided insaid end wall with an oblong opening 7L2, as seen more clearly in Fig. 11.

1-1 designates a driving-spindle, which is mounted in the hollow shaft 11, with the inner end thereof projecting beyond the shaft inside of the chamber. Said spindle is adapted to carry at its outer end a chuck I, adapted to grasp and hold a bolt or lagscrew J or a nail which is to be driven into the hull of a sunken vessel or like place for making tempor'ary repairs, and thereby enabling the water to be pumped out and the vessel to be raised. In case of a steel-clad vessel and where a leak is to be repaired by securing a sheet of steel over the broken part of the hull I intend to employ in connection with said chuck a threaded bolt or screw J of special and novel construction, by which said plate may be secured in place. Said screw or bolt is shown more clearly in Fig. 10 and is shaped to form a drill, by which a hole will be bored in the steel, and a tap to cut the thread by which it is to be held therein. As herein shown, said screw or bolt consists of a drillpoint j, which, when to be used in metal, is made in the form of a metal drill-bit, a screwthreaded portion j, which is made of such hardness as to cut the threads in the hole made by the drill j, a shank 3' and a head j. In order that said screw may be grasped by the chuck, it will be provided outside of the head with a square shank j, by means of which it may be turned or driven. When this form of screw is to be used in wood, it will be understood that the construction will be similar to that described, with the exception that the outer end thereof will be made in the form of a boring-bit and the threaded part will have threads of the kind usual in wood-screws.

The chuck is shown in detail in Figs. 10 to 14, inclusive, and is made as follows: The inner end of the spindle II is provided with a short axial recess or bore 11 which is internally screw-threaded, as seen more clearlyin Fig. 10. In the bottom of said recess and parallel with the central axis of the shaft is mounted a conical plug 11 which will preferably have screw'threaded connection with the shaft and arranged with its conical portion projecting centrally into said recess. 1 1 designate chuck-jaws, which are mounted in the recess ll' and have screw-threaded conneetion therewith. The screw-threaded portions of said chuck-jaws are formed on a slightly-in ward taper, so that as they are m oved inwardly in to the recess by their screwthrcaded connection with the shaft the outer ends thereof are brought together or closed with a clamping action. The inner ends of said ch uck-jaws are formed obliquely with re spect to the central axis of the recess I1 so as to engage the oblique surface of the conical plugll Moving said jaws inwardly upon the cone has the effect of bringing the outer ends of the jaws toward each other, and the said plug acts in connection with the outer tapered surfaces of the jaws to move the jaws bodily inwarchand to thereby clamp the shank j of the bolt J, so as to firmly hold said bolt therein. Preferably the two opposite jaws I only of the four jaws are extended outwardly through the oblong slot 7L2 of the sleeve H Figs. 7 and 10, while the jaws 1 stop short of the end wall ll of said sleeve. If found desirable, however, said jaws I may also be made of such length as to extend beyond the sleeve 11 in which case the slot 7L2 will have the form of a Maltese cross. In order that said jaws may not drop out of their screwthreaded connection with the spindle II when the screw or bolt J has been removed therefrom, the main or body portions of said jaws will be made of segmental form in cross-section, so that when assembled, as shown in Fig. 14, they form an almost complete conical plug. from moving sufficiently within the aperture of the shaft to become disengaged from the screw-threads therein. It will be understood, of course, that sufficient clearance will be left between the adjacent oblique faces of the jaws to provide for the necessary clamping action thereof. Said shaft H is shown as provided on its inner end with a drivingpul roo Their construction will prevent parts I ley, by which the same and the spindle may be driven from any suitable source of power such, for instance, as an electric motor. Obviously other driving means may be employed for actuating the shaft and spindle-such, for instance,as a balance-wheel operated by hand. To provide means for feeding the spindle outwardly as the same is rotated, I have shown a bent lever K, which is mounted upon a bracket or standard K, secured upon the inner wall of the chamber. One end of said lever K is adapted to engage the extreme inner end of the spindle I-l, while the other or operating end K is adapted to be grasped by the hand to exert power upon the shaft in a well-known manner.

By an inspection of Figs. 11 and 12 it will be noted that when the spindle H is within the hollow shaft H and the chuck-jaws project through the rectangular opening it of said shaft said shaft and spindle will be held from movement with relation to each other, so that when the spindle is rotated to drive the combined drill and bolt into the Work the shaft H will rotate within the cylinder II, the shaft and spindle forming, in efiect, at this time a rotative driving-shaft. The rotative friction will therefore be between the shaft 11 and cylinder H, and a lubricant will be applied to said parts in any convenient manner. When it is desired to disengage the chuck-jaws from the shank of a bolt which has been driven home, this Will be accomplished by holding the shaft H from rotation within the cylinder H and turning the spindle in a direction the reverse of that in which it is rotated when driving the bolt. Owing to the interlocking connection of the projecting chuckjaws with the hollow shaft, as above described, said shaft willhold the several jaws from movement, and the reverse rotation of the spindle will permit the chuckjaws to expand, so as to disengage the same from the shank of the bolt. The shaft H is herein shown as provided with a handle H by which the same may be held from rotation when the chuck is being disengaged from the bolt in the manner described. In order to more firmly connect the spindle with the hollow shaft, a clamping device may be employed, such as a set-screw k Fig. 7, which is inserted through the hollow shaft and bears at its inner end against the spindle.

The parts of the bolt-inserting devices are so constructed and arranged that the spindle may be withdrawn through the hollow shaft H after the bolt has been driven and another screw then engaged with the chuck, the parts being so constructed and arranged that when the chuck has been disengaged from the screw, as above described, the spindle may be withdrawn through the shaft H to the interior of the chamber and another bolt then engaged with the chuck for insertion into the work, as before stated. For this purpose the spindle H is mounted so as to be longitudinally movable in the shaft I Pand so as to be gate or valve L, which is shown in detail in Figs. 7 and ,8. Said gate, as herein shown, consists of a fiat thin plate which is inserted transversely into the sleeve through a suitable slot and is provided with a circular inner end to conform to the opposite inner curved wall of the shaft when in its closed position. Said shaft will be of such length inside of the slide gate or valve L that when the spindle is withdrawn to the inner end thereof there will be sufficient distance between the gate and the inner end of the sleeve to accommodate the full length of the bolt and at the same time maintain the outer end of the spindle within the inner end of the shaft, so as to close the latter against ingress of water. This construction permits the gate or valve to be closed before the spindle is completely withdrawn from the shaft, so that at no time during the withdrawal of said spindle will there be an opening through which water may enter to the interior of the apparatus. With this construction it will be seen that the spindle may be withdrawn through the shaft as each bolt or nail is driven and a new one supplied to the chuck without danger of water flooding the apparatus and without the necessity of lifting the apparatus above the surface of the water. A packing h willbe placed in a suitable packing-groove in the spindle between said spindle and the interior of the shaft, herein shown as at the outer end thereof. It will be understood that in case nails or spikes are used instead of bolts, as herein shown, said nails will be driven home by striking the inner end of the spindle with a hammer or other suitable tool. It will also be understood that the recharging of the chuck as each nail is driven home will be in all respects like the operation hereinbefore described.

In the operation of the device the shell will be provided with suitable means by which lifting-cables may be attached thereto. It will furthermore be understood that when a steel plate or board is being attached to the side of a vessel or the like by means of bolts inserted therethrough and into the said ves sel by the bolt-inserting device H the levers F and G may be employed to hold said plate or board in place. For this purpose said levers may be provided with suitable grappling devices for grasping the plate or board.

I claim as my invention l. A diving apparatus comprising inner and outer parallel side walls or shells, vertically arranged distance-bars interposed between and secured at their opposite edges to said shells, inner and outer convex end walls secured to the ends of the side walls and radial curved distance-bars interposed between and attached to said end walls, and attached at their outer ends to the said vertical bars.

2. A divingapparatus comprisinginnerand outer parallel side walls or shells,vertical distance-bars interposed between said walls or shells, and horizontal ribs or rings secured to the inner surface of the inner side wall or shell.

In a diving apparatus, the combination with the side walls thereof provided with a manhole, a manhole-cover, a spider engaging the inner face of said side walls and clamping means comprising a two-part bolt engaging said covering and spider and connected at their inner ends, said clamping means being operable from both the inside and outside of the apparatus.

4. In a diving apparatus, the combination of a side wall thereof provided with a manhole, a manhole-cover, a spider engaging the inner face of the wall, a telescopic clampingbolt passing through said cover and engaging a part carried by said spider, and means for tightening and releasing said bolt from both the inside and outside of the apparatus.

5. In a diving apparatus, the combination of the side wall thereof provided with a manhole, a manhole-cover, a spider engaging the inner face of the wall, an outer clampingscrew passing through said cover, and an inner clamping-screw engaging the spider and having screw-threaded engagement at its end with the outer clamping-screw.

6. In a diving apparatus embracing inner and outer walls provided with oppositely-arranged openings, an apertured outer frame secured to said outer wall and provided at its inner side with a rabbet to receive the margin of said inner wall, and a clamping-rin g bolted to the said frame by bolts which pass through said inner wall.

7. A diving apparatus embracing inner and outer walls provided with oppositely-arranged openings, a two-part frame consisting of an outer member which is attached to the outer wall and is in contact with said inner wall, an inner clamping member located in contact with the inner face of the inner wall, a plate of glass held at its edges between the inner and outer members of said frame, and clampingbolts,whieh pass through the inner shell and hold together the said inner and outer members of the frame.

8. A diving apparatus comprising a watertight chamber or compartment, provided with an opening in one of its walls, a disk rotatably mounted in said opening, and an oscillatory tool-actuating lever mounted in said disk and having angular movement with relation thereto.

0. A diving apparatus comprising a watertight chamber or compartment provided with an opening in one of its walls, a disk rotatively mounted in said opening and provided with an elongated opening, and a tool-actuating lever pivotally mounted in said disk and provided with an integral cylindric block which lills said opening and forms a watertight joint with the disk.

10. A diving apparatus comprising a watertight chamber or compartment provided with an opening in one of its walls, a two-part disk rotatively mounted in said opening, the members of said disk being provided in their adjacent edges with oppositely-arranged recesses which form an elongated opening therein, and a tool-actuating lever provided between its ends with a cylindrie block which fills said opening in the disk.

11. In a diving apparatus comprising a water-tight chamber or compartment, provided with an opening in one of its walls, a two-part disk mounted in said Wall, the adjacent faces of the members of the disk being provided with oppositely-arranged recesses which form an elongated opening and with bearing'apertures located in said recesses, a tool-actuating lever mounted in said disk and provided between its ends with a cylindric block which fills said opening of the disk and is provided with oppositely-arranged pivot-studs which engage said bearing-apertures of the disk.

12. In a diving apparatus comprising a water-tight chamber or compartment provided with an opening in one of its walls, atwo-part ring mounted in said opening and provided with an annular bearing-groove, a disk having marginal engagement with said groove and adapted to rotate therein, said disk being provided with a central slot or opening, and a tool-actuating lever extending through said slot, said lever being provided with an integral cylindrical block which fills and turns in said slot.

18. A diving apparatus comprising a chamher having inner and outer walls provided with oppositely-arranged openings, a twopart bearing-ring, between the parts of which the inner wall is clamped, and the outer mcmber of which is secured to the outer wall, a disk rotatively mounted in said bearing-ring, a tool-actuating lever passing through and pivotally mounted in said disk, and means afiording a water-tight connection between said lever and disk.

14:. A diving apparatus comprising a watertight chamber or compartment and a bolt-inserting device embracing an outer endwisemovable hollow shaft which extends through the wall of the chamber and an inner spindle removably mounted therein and provided on its outer end with means for holding a belt or the like, means operable from the inside of the chamber for disengaging the bolt from the spindle when the latter is at the outer limit of its movement and means for closing the opening through said shaft when the spindle is withdrawn therefrom.

15. A diving apparatus com prising a water tight chamber or compartment and a bolt-inserting device embracing an outer endwise movable hollow shaft which extends through the wall of the chamber, and an inner spindle removably mounted in said shaft and provided on its outer end with means for holding a bolt or the like, means operable from the inside of the chamber for disengaging the bolt from the spindle when the latter is at the outer limit of its movement and a slide valve or gate in said sleeve for closing the same when the spindle is withdrawn.

16. A diving apparatus comprising a watertight chamber or compartment, and a bolt-inserting device embracing a rotative and endwisemovable hollow shaft which extends through and has water-tight connection with the wall of the chamber, an inner spindle which passes through the hollow shaft and is provided with bolt-holding means, and means for closing the opening through the shaft when the spindle is withdrawn therefrom.

17. A diving apparatus comprising a watertight chamber or compartm'ent, and a bolt-in serting device embracing a rotative and endwise-movable hollow shaft, a stationary cylinder in which said hollow shaft slides and turns, an inner spindle which passes through the hollow shaft and is provided with boltholding means, and means for closing the opening through the shaft when the spindle is withdrawn therefrom.

18. A diving apparatus comprising awatertight chamber or compartment and a bolt-inserting device embracing an outer hollow shaft, an inner spindle provided in its outer end with a bolt-holding chuck having interlocking engagement with the shaft, means for actuating said bolt-holding means from within the chamber, and means for closing said hollow shaft when the spind1e is withdrawn therefrom.

19. 'A diving apparatus comprising a watertight chamber or compartment, and a bolt-inserting device embracing a rotative and endwise-movable hollow shaft which extends through and has water-tight connection with v the wall of the chamber, an inner spindle which passes through the hollow shaft and is provided with bolt-holding devices, means for actuating said bolt-holding devices from the interior of the chamber and means for closing the opening through the hollow shaft when the spindle is withdrawn therefrom.

20. A diving-bell comprising a water-tight chamber or compartment and a boltinserting device embracing an outer hollow shaft which extends through the wall of said chamber, and an inner spindle provided on its outer end with a bolt-holding device adapted to insert a bolt when rotated in one direction and to release said bolt when the direction of rotation is reversed.

21. A bolt-inserting device embracing an outer rotary, endwise-movable, hollow shaft, an inner spindle removably mounted in said shaft and provided at its outer end with means for holding a bolt or the like, means for feeding the shaft to its work, and means for closing said shaft when the spindle is with drawn therefrom.

22. A bolt-inserting device embracing an outer, rotary, endwise-movable, hollow shaft,

an inner spindle removably mounted in said shaft and provided at its outer end with means for holding a bolt or the like, means for closing the hollow shaft when the spindle is removed therefrom, and means for giving rotary motion to the shaft and spindle.

23. A bolt-inserting device embracing an outer hollow shaft, an inner spindle re1novably mounted in said shaft and provided on its outer end with means for holding a bolt or the like, means for feeding the shaft and spindle to the work comprising a lever pivoted between its ends adjacent to one end of said spindle, provided with an operating-handle and adapted to engage the inner end of the spindle, and means for closing said shaft when the spindle is withdrawn therefrom.

2%; A diving-bell comprising a water-tight chamber or compartment and a bolt-inserting device embracing a hollow endwise-movable shaft, which extends through the Wall of said chamber and is connected therewith by means affording water-tight connection, an inner rotative and removable spindle provided at its outer end with means for holding a bolt or the like, and a slide gate or valve in said shaft for closing the same when the spindle is withdrawn therefrom, said valve being located from the inner end of the shaft a dis tance greater than the distance between the outer end of the bolt when attached to the spindle and the outer end of said spindle.

25. A diving-bell comprising a water-tight chamber or compartment and a bolt-inserting device embracing an outer hollow shaft which extends through the wall of said chamber, an inner spindle removably mounted therein, said spindle being provided on its outer end with means for engaging and holding a bolt, and actuating connections between said holding means and the hollow shaft constructed to release said bolt by the turning of the spindle in the shaft.

26. A bolt-inserting device embracing an outer stationary cylinder, a hollow shaft which rotates and slides endwise therein, a spindle removably mounted in saidshaft and provided on its outer end With means for holding a bolt or the like, means for locking the shaft and spindle from relative rotation,,means for turn-ing the shaft and spindle, and means for closing the bore of the shaft when the spindle is withdrawn therefrom.

27. A bolt-inserting device embracing an outer stationary cylinder provided with centrally-apertured ends, a hollow shaft having outer stationary cylinder, a hollow shaft mounted therein and provided with circular guide-flanges and with interposed packingrings forming a cylindric enlargement to fit the cylinder, a spindle mounted in said shaft provided on its outer end with means for holding a bolt or the like, and means for closing the bore of the shaft when the spindle is withdrawn therefrom.

29. A bolt-inserting device embracing an outer stationary cylinder, a hollow shaft having rotary and reciproeatory movement therein, a spindle removably mounted in said shaft and provided at its outer end with a chuck for holding a bolt or the like, said chuck having jaws which extend beyond the end of the spindle, and the shaft having its outer end closed by a wall provided with an opening which engages the clutch-jaws, whereby the latter may be actuated.

30. A diving apparatus comprising a Watertight chamber or compartment and a bolt-inserting device embracing an outer hollow shaft, an inner spindle, a bolt-holding chuck in the outer end of said spindle engaging an angular opening in the outer end of said shaft and means for closing said hollow shaft when the spindle is withdrawn therefrom.

In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this 11th day of October, A. D. 1897.

EMIL F. XV. SCITOENNAUER.

\Vitnesses:

VILLIAM L. HALL, R. CUTHBERT VIVIAN. 

